Take a look at this:
https://flippa.com/2620604-980-per-m...no-work-needed

Some guy just bought a domain off Sedo, or registered it new, and threw some articles up on a static site, placed some ads, outsourced some SEO and let it wait. He ended up making $900/month and flipped it for $16,300. This is a great example of why exact match domains are so great!